I had another heat exchanger clamp break. Ordered 2 new clamps from our local Universal distributor, and when they arrived, I thought they were the wrong parts. The material was twice as thick as the old clamps, and the angles on the tabs were the same on both sides of the clamp, rather than the sharper angle one side had on the old clamp. I called the distributor, and he said that these clamps are an upgrade to address the problem of the clamps breaking. They are supposed to require a 25 mm long bolt, but since my old bolts were 30 mm, I just re-used them. The new clamps are much harder to straighten, and then re-bend, but the job is doable. The Westerbeke part number is 046947. Hopefully this will cure the broken clamp issue.
One thing to note. The new clamps put the port side of the heat exchanger against the bulkhead, so it was necessary to bend the exchanger away from the bulkhead with a pry bar. Also, use a strap wrench to tilt the exchanger, so the engine zinc is not right above the engine mount.
One thing to note. The new clamps put the port side of the heat exchanger against the bulkhead, so it was necessary to bend the exchanger away from the bulkhead with a pry bar. Also, use a strap wrench to tilt the exchanger, so the engine zinc is not right above the engine mount.